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Pentagonocyclicus
Discussion
Disarticulated columnals, according to Ubaghs, et al., 1978: T934
Taxonomy
Pentagonocyclicus was named by Yeltysheva and Shevchenko (1960). It is considered to be a form taxon.
It was assigned to Crinoidea by Pershina and Tsyganko (1980).
It was assigned to Crinoidea by Pershina and Tsyganko (1980).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1960 | Pentagonocyclicus Yeltysheva and Shevchenko |
| 1980 | Pentagonocyclicus Pershina and Tsyganko |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
G. †Pentagonocyclicus Yeltysheva and Shevchenko 1960
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†Pentagonocyclicus lamonti Donovan et al. 2011
Diagnosis
No diagnoses are available